Floor-washing machine



Nov. 13, 1928 15 691263 R. ALVARADO FLOOR WASHING MACI'TIIUS Filed Nov. :50, 1925 $7 E t; N

2 Sheets Sheet l 26 5g 6g 55. if 45 g 54 5? 47 a & $5 N I N mvmmrz JovziZZoAZfvaruYZo BY w, D

ATTORNEY Ndv. 13, 1928.

2 Sheets-$hea-t 7IIIIIIIIIIIII II QIIIIII INVENTOR 07111210. 6112180 R. ALVARADO FLOOR WASHING MACHINE Flled Nov 50 1925 ATTORNEY f dle ' operate, the mop lecting the water.

85 tension,-guard1ng the same from e struction and com embodiment of the ing the motor,

' Patented Nov, '13, 1928.

NlTEDfS TATES PATENT OFFICE.

aox mo anvmno, or J'AIAICA, mzw ronx.

moawnsnme mourns.-

Application filed November 30,1925. sum in. 72,149.

This invention relates to floor cleaning apparatus and has as one of its objects'to provide a manuall propelled device easily movable over a leve surface and having combined 5 with it a motor for driving the cleaning and scrubbing elements. i

It is a further feature to provide a brush,

- driven by the motor -and also an endless mop havin means for ischarging;water,'gath- 10 ered rom the surfaceundergomg cleaning,

directly into a tank carried by the ap aratus, said tank being removable and prov1 ed with a faucet for drawing of contents.

Another aim is in the provision of a hanarranged to control the mop element whereby its effectiveness is under the control of an operator, the handle beingadapted to raise the mop from the floor to let the brush thereafter wiping and col- Another object is to provide slidable, spring lpressed blocks which automatically adjust t e mop and brush, permittin its use effectively on an uneven surface, an also to 25 regulate the tension of the squeezing rolls. A further purpose is in the provision of a removable rdle of soft material to prevent abrasion 0 furniture,

rollers and like parts when desired.

- These and other objects, such ans-maintaining the driving connections under desirable from the apparatus i ht of water in the tank, providing cushion evices on the apparatus to prevent abrasion of adjacentobjects, and the-like, are accomplishedby the novel conination of parts hereinshown in the accompanying'a material part of this ascertaining the after described and ing drawings, form disclosure, and in wh1ch: Figure 1 is a top plan view showing an apparatus, parts, includand cover being omitted. I igure 2 is a longitudinal sectional view taken on line 2-2 of Figurel. 7 Figure 3 is a fragmentary sectional view 2 taken on line 3 3'of Figure 2.

The apparatus includes a framecomposed of .two similar. side plates 10, generall triangular in shape with the base towards t e rear.

- Secured to the upper edges of these plates I etc., and to use spe-- I cially designed headed studs and screws 89 which permit readily removing the mop.

moisture,

'aretfixed a pair of pulleys having steps and 35, the inner, 36, crossed andguided by anti-friction studs is a thin metallic removable cover 11, curved downwardly at the front where it is provided with a circumjacent strip or band 12 of rubher or like cushioning material, the cover beinlgnremovably engaged by screws 13 havmg urled heads. 7 At the upper part of the sides 10 is fixeda transverse racket 14 inclined downwardly towards the front, on which is mounted an electric motor 15, current to which may be controlled by the lever switch 16, this motor having adrivingpulley 17 at the end of its shaft which projects through the bracket into the casing.

A- curved by a hinge the length of the a paratus, is an angle strip 20, which, with a p ate 21 at the rear forms a partial flooring, the same being partiallyenclosedby an end plate 22 removably secured to the sides b screws, and holds the tank inplace; this p e also carries the rear wheels. 1

tom, midway in Carried by the'plate 22; at its ass a rearwardly e'xtendmgbracket 24 in wh ch is pivotally mounted a castor 25 supporting the apparatus at the rear.

ear the front a spool 26 .to rest upon the surface over which the apps.- ratus moved, is held between the sides 10 by specially designedstuds 28 having enlargedheads 29 secured against the outer surfaces of the sides by screws 30, the $0018 revolving free] on. the inreaching stu as shown in l igure 3, and supportin the forward portion of thestructure, the of the spool carrying thejs reador full wid of the mo with absorbewateras received from the oor, the arrangement being such asto allow removal of the s oolin an easy manner from the outside of t ea paratus.

Above and further towards e front, is revolu'bly mounted a spindle'or countershaft 31 or-transmitting power from the motor to the entire mechanism; it has its reduced ends ter of the spindle is a pulley 32 driven by. a

belt 33 trained over. the motor pulley 17:

ends of the spindle 31, 84 belts I On'the shouldered smaller. steps driving 37 fixed in the adjacent sides and trained,

having heads 27 7 plate 18 is' removably connected I I 19 to the side plates at the rear. and extending between the sides, at the bot-- and arranged to operate on a surface in advance bf the spool 26.

A guard plate 44, held by end flanges to the inner surfaces of the frame sides, prevents throwing water and dirt from the brush in an upward direction.

The larger steps of the pulleys on the .spindle 31 drive belts 45, arranged closely adjacentthe frame sides, below guards 46, and

trained over the pulleys 47, fixed on the ends of a shaft" 48, journalled in blocks 49, movable in recesses in the frame sides and pressed inwardly bg'springs 51 which regulate the pressure 0 the mop squeezing rolls and avoid manual adjustment.

- ends; adjacent Fixed on the shaft 48 is a roll 52 set with pins 52', the rolls acting as a squeezer and the pins to prevent slippin of the mop when in operation, the pulleys 47 I the shaft 48, and in line with the directions of movement of the block 49, is a shaft 53 on which is a roll 54, and rearwardly is an idle roll 55 fixed on a shaft 56, both the frame sides.

A guide roll 57 is likewise disposedbetween the frame sides and also a pressure roll 58 to maintain the mop in a taut condition, its spindle 59 being mounted in brackets oted at 61 to the sides and drawn u wardly by tension springs .62 as best seen in igure 2.

Another pair of guards 63 are arranged below'thebelts 45 to protect them frorn mois ture and dirt. I p

A pair of blocks 64 are slidabl mounted to move vertically in the frame si e in advance of the angle element 20, these bloc-ks being pressed downwardly by springs 65 to keep shafts 53 and 56 being journalled direct in the mop under certain pressure-necessary when moving over. an uneven surface, the

blocks being connected with slotted links 66.

Set in the blocks-64 are screws 66 having inreaching plain-point stems 67 on which are revolubl 'mounted aroll 68, and carri ed'by the bloc sis a rd '69 which prevents the 0 from running sidewise. operating handle 70 is fixed centrally in a yoke bar 71 having forked extensions 7 2 held by pivot screws 7 3, to the outer surfaces like, the same being disposed at its,

of theframe sides, and (provided with projecting arms 74 connecte by pivots 75 with the upper ends of the links 66.

Trained over the driving spool 52 is an endless mop 76, such as a strip of felt or the assing over the roll 55, then between the r0 1 54 and spool 52, then over the tension roll 58, under roll 68, spool 26 and guide rolls 57 to the driving spool 52, where the lower side is constantly compressed by action of the springs 51 against the roll 54. I

Any moisture from the mop is directed by guards 77 to enter the depressed cover portion 7 8 of a receiving tank 79, resting on the angle 20 and end plate 21 at the rear of the structure.

The tank is supplied with a faucet 80 to draw off its contents and also a float 81 operating a stem 82, guided at 83 at the top of the tank and provided with a head 84, visibly indicating the height of the water in the tank. i

In operation, the motor being in operation, and the floor or like surface having been previously wet, the apparatus may be moved over the floor, whereupon the brush operates to clean the surface, moving the dirt and moisture rearwardly to be gathered by the mop, which is squeezed to causethe adhering moisture and dirt to fall into the tank.

By suitable manipulation of the handle 70, the structure is readily guided and moved upon any level surface, and furthermore pressure to any desired degree may be applied to the mop below the roll 68.

Having thus described my invention and set forth the manner of its construction and application, what claim as new and desire to secure by Letters Patent, is 2- In affloor scrubber, the combination with a casing having a motor on itsuppersurface, of a tank in said casing havin a wringing means thereover, a counter shaft within the forward end of said casing belt driven by said motor, a rotary brush at the front of the casing driven by a belt from said counter shaft, a lurality of rolls journalled in the casing si es, includin aidrive roll near the top of said casing and a spring pressed roll at the bottom, pulleys on the ends of the drive roll belt driven by said counter shaft, an endless mop trained over said rolls and held in contact with the floor by the spring pressed roll, a'handle pivoted on the sides offsaid' In witness whereof I have affixed my sig- I nature.-

ROM LO ALVARADO. 

